Island



(No Model.)

P. L. BURROWS. SPEGTAOLE FRAME.

' No. 606,272. Patented June 28,1898.

l v A l -v UW HIW' I/ 1"" B Ema FRANK L. BURROVVS, OF CRANSTON, RHODEISLAND, ASSIGNOR TO DUTEE W'ILCOX, OF PROVIDENCE, AND CHARLES A.WILKINSON, OF WARIVICK,

RHODE ISLAND.

SPECTACLE-FRAM E.

SPECIFICATION forming part of Letters Patent No. 606,272, dated June 28,1898. Application filed November 10, 1897. Serial No. 658,031. (Nomodel.)

To all whom it may concern.-

Be it known that I, FRANK L. BURROWS, of the town of C1tl1SllOl],ll1 thecounty of Providence and State of Rhode Island, have invented a certainnew and useful Improvement in Spectacle-Frames; and I declare thefollowing to be a specification thereof, reference being had to theaccompanying draw- 1ngs.

Like letters indicate like parts.

Figure 1 is a perspective view of the eyerim of a spectacle-frameprovided with end pieces and the clamping-screw to hold them together,between which end pieces a templearm is pivotally mounted. Fig. 2 is aview, partly in elevation and partly in section, on lineca 0c of Fig. 1and shows the end pieces of the eye-rim secured together by theclamping-screw and also the temple-arm screwthreaded and tapped near itsinner end and held between the outer portions of the end pieces by meansof a screw-pivot engageable with the temple arm and passing looselythrough a perforation in one end piece and into a socket of the otherend piece.

My invention relates to spectacle-frames, and more particularly to themeans of pivotally mounting the temple-arm between the end pieces of theeye-rims; and it consists in the combination, with an eye-rim having twoend pieces adapted to meet and lie in contact, whose outer portions arecut away to form a slot between them, of a temple-arm having its innerend thinned and tapped for the reception of a pivot-screw engageabletherewith, which screw passes loosely through a perforation in oneendpiece and has its end loosely held in an interior socket of the otherend piece, said temple-arm being arranged to lie between the cut-awayportions of the end pieces and said end pieces being secured in positiontogether by means of a clampingscrew, as hereinafter more particularlydescribed.

In the drawings, A indicates the eye-rim of a spectacle-frame adapted tohold the lensB therein. The eye-rim A has secured thereto at its twoends the earpieces a b, which are bored and tapped, as shown in Fig. 2,for the reception of the clamping-screw O, which passes through bothsaid end pieces, as shown,

the usual "and well-known manner. Each end piece at its outer portion isthinned or cut away, as shown in Fig. 2, to form an interior slot orspace wherein the temple-arm may be swung. The end piece a has a socketor recess on its inner surface, as plainly seen in Fig. 2, and the endpiece b has an exterior socket or recess of the peculiar form shown insaid figure, where it is seen that the recess is circular as seen fromwithout, but has a con-- vex bottom. A perforation extends centrallyfrom said circular socket through the bottom thereof to the innersurface of the end piece I).

The temple-arm D is of the usual construction and has its innerend'thinned so as to enter the slot formed between the exterior portionsof the end pieces a b. The templearm D has its eye tapped orscrew-threaded, as shown. A screw-pivot E passes through the perforationof the end piece I) and the screw-threaded eye of the temple-arm intothe socket of the end pieces a. Said screw E has its shank looselymounted in the perforation of the end piece I), and its threads engagethe threaded eye of the temple-arm. D, and its point enters loosely intothe socket of the end piece a. The head of the screw E is enlarged andis contained in the tubular socket of the end piece I) and bears againstthe convex bottom of said socket. By means of this construction it ispossible to remove the temple-arm D-from the end pieces a 1) withoutseparating said end pieces, thus allowing such adjustment withoutremoval of the lens 13 from the eye-rim A, the clamp ing-screw 0 alwaysserving to hold the end pieces together and confine the lens in theframe. By unscrewing the screw-pivot E the temple-arm can be readilytaken out and can be inserted again by inserting the screw E as before.The convex bottom of the tubular slot of the end piece 7) serves as ahearing to receive the pressure of the screw-head, upon the inner sidethereof. The points of contact between said rounded or convex bottom ofsaid socket and the inner surface of the screw-head being very limitedin extent the frictional bearing is very light. When the temple-arm Dswings, the screw.-

pivot E, which is engaged with it by the and serves to hold them snuglyin contact in screw-threads, turns with it, such movement of the screwbeing possible because the screw passes loosely through one end pieceand into the socket of the other without engaging with either. Byslightly turning the screw E the friction of the temple-arm may beeasily regulated.

Besides the great advantage of the easy detachability of the temple-armfrom said end pieces by the construction shown I also secure theadvantage of a comparativelyeXtended bearing-surface not only betweenthe end pieces,but also through the whole extent of the screw E, whichserves as a pivot.

Heretofore, so far as I am aware, templearrns have always been providedwith a plain hole or eye and have loosely swiveled upon a pivot,screwshank, or dowel, which itself is stationary; but my invention isnew in that my temple-arm has an eye screw-threaded and the screw-pivotengages by this means with the temple-arm and turns with it.

By the use of the inner socket in the end piece a to receive the pointor end of the screw E the exterior surface of the outer portion of theend piece a is not perforated, but

plane, and so is not disfigured and is capable of a superior finish.

I claim as a novel and useful invention and desire to secure by LettersPatent 1. The combination in spectacle-frames, having an eye-rim withend pieces secured thereto and adapted to meet each other and which arethinned at their outer portions, of

a clamping-screw passing through said end pieces, a slot between theouter cut-away portions of the end pieces, a socket or recess in theinner surface of one end piece, a socket in the outer surface of theother of said end pieces, a perforation through said end piece lastmentioned, concentric with said socket, a temple-rim having ascrew-threaded eye, and a screw-pivot passing through the lastnamed endpiece and into the socket of the other end piece and engaging with itsthread said temple-arm, substantially as specified.

2. The combination in spectacle-frames, having an eye-rim with endpieces secured thereto adapted to meet each other and which are thinnedat their outer portion, of a clamping-screw passing through said endpieces, a slot between the outer cut-away portions of the end pieces, asocket or recess in the in ner surface of one end piece, a tubularsocket with convex bottom formed'in the other of said end pieces andopening exteriorly, a perforation through said convex end of thelastnamed socket and concentric therewith, a temple-arm having ascrew-threaded eye, and a screw-pivot passing through the socket andperforation of the last-named end piece and engaging with its threadsaid temple-arm, substantially as shown.

FRANK L. BURROYVS.

Witnesses:

DANIEL W. FINK, WARREN R. PIERCE.

